Philips MX1015D/37 Service Manual page 7

www.freeservicemanuals.info
MX10xxD REPAIR CHART
MX10xxD Repair Chart
Main Unit
A B
Video output
Audio output
No picture
No sound
2-1
C
No sound &
picture output
Yes
Check Audio
BD/QA1,QA2
Yes
Check Audio BD power
No Signal
Possible UA1 bad
supply UA1
cause
Pin19,12=+/-12V, Pin4,27
have signal or not
Check Front BD CPU/U5
Pin1/SCLK
Pin63/SCE
Pin64/SD1
Yes
Audio BD UA1
Pin13/CE
No
Possible UA1 bad
Pin14/D1
cause or U5
Pin15/CL
Yes
Prologic BD U3
Pin22/D1
No Possible U3 bad
Pin23/CLK
cause
Pin24/CE
10/21/2012
Tuner no
output
No
Check to Tuner BD
power supply
Check CBL4B
Pin4 Tuner
Yes
EN=4.7V
No
Check to Tuner BD
Check Front BD
Control data signal
CPU/U5
Audio BD CBL 12/Pin
Pin49=4.7V
9.10.11.12.13.14
Possible CPU
bad cause
No
Check the data from Front
BD CPU U5/Pin 50/ST
Pin 51/PLL SD
Pin 52/PLL CLK
Pin 53/PLL DI
Pin 54/PLL D0
Pin 55/PLL CE
No data
Possible CPU U5 bad
cause damage
working
Check Prologic BD
Possible cause No
U3/pin3,9,14,17,1,2
U3 bad/damage
U4/pin2,19,7,14 signal
Yes
Check Prologic BD MUTE No
circuit Q15 electrode
B>0.7VDC
Yes
Check Prologic BD No
U3,U2,U5,U1 power supply
World of free manuals
2-1
A
Audio output
No sound
All channel no sound
No Re-insert and fix the
Check all cable is loose
cable
or bad INT
Yes
Yes
Possible
Prologic BD
No
Change the fuse
Check the Fuse F1 &
U3 damage
12A/250VAC
F2(Amp BD)
Yes
Not working
Check the power Relay
(PSU BD) is working or
not
Yes
working Check PSU BD Q4
electrode B=0V
Check PSU BD CBL02A
No
Pin 1=5V, Pin 3=12V,
Pin 5 = -12V
Check PSU BD
Yes
CBL03A PWR
SW/Pin6=4.8V
Yes No
Check Front BD CPU
U5/Pin2=4.8VDC or change
CPU/UPD780023QFP
Check AMP BD channel
output Relay RL1,2,3 is
working or not
Check protection circuit
Not work (AMP BD)
Pin 1 No
IC/U6 Pin6=0VDC
Pin1=0VDC, Pin2<0.7VDC
Check Front BD CPU/U5
Pin5=4.8VDC Pin 2 No
Check power AMP IC
No
U1,2,3,4,5/Pin3=0VDC
Check R20/10K (+5V up tug)
or CPU/U5 damage
No
Check the channel unnormal
operation power AMP section
Repair power supply
circuit
www.nostatech.nl
DVD Audio
no output
Check Prologic BD
CBL10
5.1CH Input
Repair/Replace DVD
Main BD
Change Q4/8550
Change Q2/9014
Check power supply +/-36V
Q2/9015, Q3/9014